Detect the presence of the sa_len field of struct sockaddr and set it if that is the case. Fixes the comparison of SocketAddr objects on Mac OS X and BSD-based systems.

git-svn-id: http://voip.null.ro/svn/yate@5218 acf43c95-373e-0410-b603-e72c3f656dc1

configure.in

@@ -140,6 +140,24 @@ HAVE_PRCTL="-DHAVE_PRCTL"
 fi
 AC_SUBST(HAVE_PRCTL)
 
+HAVE_SOCKADDR_LEN=""
+AC_MSG_CHECKING([for sockaddr.sa_len presence])
+AC_TRY_COMPILE([
+#include <sys/socket.h>
+],[
+struct sockaddr saddr;
+saddr.sa_len = sizeof(struct sockaddr);
+],
+have_sockaddr_len="yes",
+have_sockaddr_len="no"
+)
+if [[ "$have_sockaddr_len" = "yes" ]]; then
+HAVE_SOCKADDR_LEN="-DHAVE_SOCKADDR_LEN"
+fi
+AC_SUBST(HAVE_SOCKADDR_LEN)
+AC_MSG_RESULT([$have_sockaddr_len])
+
+
 HAVE_POLL=no
 AC_ARG_ENABLE(poll,AC_HELP_STRING([--enable-poll],[Use poll() on sockets (default: yes)]),want_poll=$enableval,want_poll=yes)
 if [[ "x$want_poll" = "xyes" ]]; then

engine/Makefile.in

@@ -101,7 +101,7 @@ DataFormat.o: @srcdir@/DataFormat.cpp $(MKDEPS) $(PINC)
 	$(COMPILE) -c $<
 
 Socket.o: @srcdir@/Socket.cpp $(MKDEPS) $(CINC)
-	$(COMPILE) @FDSIZE_HACK@ @NETDB_FLAGS@ -c $<
+	$(COMPILE) @FDSIZE_HACK@ @NETDB_FLAGS@ @HAVE_SOCKADDR_LEN@ -c $<
 
 Resolver.o: @srcdir@/Resolver.cpp $(MKDEPS) $(CINC)
 	$(COMPILE) @RESOLV_INC@ -c $<

engine/Socket.cpp

@@ -158,6 +158,9 @@ bool SocketAddr::assign(int family)
 	m_address = (struct sockaddr*) ::calloc(m_length,1);
     if (m_address) {
 	m_address->sa_family = family;
+#ifdef HAVE_SOCKADDR_LEN
+	m_address->sa_len = m_length;
+#endif
 	return true;
     }
     return false;